import datetime

from pydantic import BaseModel, ConfigDict, AliasGenerator
from pydantic.alias_generators import to_camel, to_snake


class ProfileResponse(BaseModel):
    model_config = ConfigDict(alias_generator=AliasGenerator(serialization_alias=to_camel))
    id: int
    external_id: int
    created_at: datetime.datetime
    modified_at: datetime.datetime


class ChatResponse(BaseModel):
    model_config = ConfigDict(alias_generator=AliasGenerator(validation_alias=to_snake,
                                                             serialization_alias=to_camel))
    id: int
    name: str | None
    admin: ProfileResponse
    users: list[ProfileResponse] | None = None
    created_at: datetime.datetime
    modified_at: datetime.datetime


class MessageResponse(BaseModel):
    model_config = ConfigDict(alias_generator=AliasGenerator(validation_alias=to_snake,
                                                             serialization_alias=to_camel))
    id: int
    sender: ProfileResponse
    content: str
    chat: ChatResponse
    created_at: datetime.datetime
    modified_at: datetime.datetime